Improvement in devices for supplying fresh air to cars



J. B. COLLIN. Device for `Slipplying AFrsh Air to Gars.

y of this specification, in whichc', oneat each end.

JOHNB. OOLLIN, OFY ALrOONAfrENNsYLvANIA.

IMPROVEMENT IN DEVICES I-'OR SUPPLYING FRESH AIR' o AfRs.V

Specification forming part of Letters Patent No. 222,247, dated December 2, 1879 application filed July 22, 1879.

o all whom it may concern:

Be it known that I, JOHN B. COLLIN, of A1- toona, in the county of Blair and State of Pennsylvania, have inventedcertain new and useful Improvements in Devices for Supplying Fresh Air to'U-ars;4 and I do hereby declare that the following is a full, clear, and exact description of the invention, which lwill enable Others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part Figure 1 represents a longitudinal vertical sectionof a Ventilating device having my improvements applied thereto, and Fig. 2 a vertical transverse section of the same. Fig. 3 represents an end view of my improved de vice asapplied to a ear, a portion of the'latter being shown in section. ln this view the box is drawn on a smaller scale than in the other two figures. Y I

My invention relates toga new and improved mode of supplying fresh air to cars either in a heated or natural condition.

My improvement consists in a novel construction of box for the supply of pure fresh air to the interior of the cars, by which, before it enters the latter, it is filtered and freed from dust and other impurities ca'pable of being Inechanically separated from it. I

I To enable others skilled in the art to make, construct, and use my invention, I will now proceed to describe its partsin detail.

ln the drawings, A represents an air-box of any suitable size and shape, but preferably of rectangular form, arranged lengthwise of the .car and secured to its bottom. These boxes are made in two parts, ce and b. The lower half, b,.is provided withA two openings, c and Eaclrof these openings is provided with a door-opening c with door d, and opening c with door d. These doors are hinged at their upper end to the end walls of the lower halt', b, of the boxA in `such manl y Thus constructed, as the car advances the pressure of the air forces open the forward wire-gauze screen, e, fastened to the upper side of the lower half, b, of; box A, and thence into the upper half, a., of said box, and then filtered A inthe manner now to be described before be#y ing forced ,into the interior of thecar. y i

The upper half, a., of box Ais providedwitll a double series of rods or bars, j' f', the one series f at or near its top, and the other series,

f, at or near its bottom, and whichA for obvious reasons I prefer should run lengthwise of the box, although they may be advantageously used'crosswise. Over these rodsis passed a cloth screen, g, of suitable texture and material, in the manner shown in Fig. 2-that is to say, by first passing one end over one of the top side bars, j', and then over the adjace lower-side bar, f and then over the ne "M bar, f, and lower side bar, f', and so on many bars as there are arranged in thefbdx.` The two ends are then firmly secured to the` sides of the upper half, a, of the box A. This mode of arranging the screening-cloth gives much surface for filtering and purifying the air from dust, Src., in a small space. Th'e two halves a and b thus constructed are secured and shape cut through the bottom of the`car,

whence the ltered air from box A passes into the interior of the car. The box thus constructed is secured to the bottom of the car iu any suitable or known way, care being taken in so doing that the Opening h in' box `A fits the corresponding opening formed in the bottom of the car. boxes may be applied to each carpas `may b deemed necessary or requisite to fully supply it with pure fresh air. l

It will be apparent that this air-flteringbox will operate no matter in what direction the car moves, and that it can be used either `without or in connection with any suitable airheat Nr @Flon As mauyof these fllteringh ing apparatus, such as steam or hot-water heating apparatus.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An air-filtering apparatus for supplying pure air to railroad-cars, consisting of a box, A, provided with open ends and swinging doors, a Wire-gauze screen, and an opening, h, in the manner substantially as set forth.

2. An air-filtering apparatus for supplying pure air to railroad-cars, consisting of a box, A, having open ends and swinging doors, and provided with a cloth screen, g, and opening h, in the manner substantially as set forth.

JOHN B. COLLIN.

Witnesses H. A. HALL, F. B. BROCK. 

